My iPhone 15 Pro Max caps charging at 80% thanks to Apple’s built-in iOS feature; however, the same built-in feature doesn’t appear for a macOS Intel MacBook Pro machine and we have a fleet of these. BatteryOptimizer_for_Mac to the rescue! I installed it on my macbookpro11,5 this afternoon and will let it run for a few weeks to see how it performs. Installation is simple with a single Terminal command (and some fussing in System Settings):

curl -s https://raw.githubusercontent.com/js4jiang5/BatteryOptimizer_for_Mac/main/setup.sh | bash

While there are many other open source options out there including some commercial options, they appear more focused on Apple-silicon based MacBooks.

** Update 7-4-2025 **

Using the command:

battery status

Produces:

07/03/25-15:11:01 - Battery at 78.8%, 12.083V, 27.3°C, no charging
07/03/25-15:11:01 - Battery health 109.3%, Cycle 103
07/03/25-15:11:01 - Your battery is currently being maintained at 80% with sailing to 75%
07/03/25-15:11:01 - You haven't scheduled calibration yet

As you can see, the battery is now hovering just below 80%. This utility appears to work and well at that.